I used to believe that cumulo nimbus clouds signaled an imminent invasion by UFO's, since in the movie EARTH VS. THE FLYING SAUCERS the camera looked skyward to see such clouds, which was immediately followed by said invasion.
A childhood belief about weather

others believed things like this
- When I looked up in the sky and could see the clouds moving I used to think that it was the earth spinning.— JOhn
- I used to believe that when it would be raining the white clouds lost to the dark clouds.— janet
- When I saw that the clouds were moving in the sky, I thought it was because of the rotation of the earth.Anon
- I used to watch the clouds blowing across the sky and think I was seeing evidence of the earth's rotation.— Dave T
- When I was a kid, I used to believe a nuclear plant was a clouds plant and could make magic clouds.— Tommy
- When I was about 4 and I saw the clouds moving sideways, I thought that Earth was moving closer to the Sun— Helen